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Near-Term Action - Integrated Corridor Management (ICM) Concept

The implementation of an Integrated Corridor Management (ICM) concept is a key Transportation System Management Program
strategy that focuses on maintaining the greatest mobility benefits through the application of innovative technologies
that maximize network efficiencies across modes. Such efficiencies can result in decreases in both fuel consumption and
transportation related emissions.

On April 21, 2016, the final piece of a system designed to guide motorists around major incidents along the Interstate
15 corridor was activated, providing travel choices and improving travel-time reliability. The system includes electronic
freeway signs, alternate route signs, and coordinated traffic signal and ramp meters.

Since 2010, SANDAG has been working with its local partners (Caltrans, the Metropolitan Transit System, and the cities
of San Diego, Poway, and Escondido) to demonstrate the benefits of this concept along the Interstate-15 (I-15) corridor.
The I-15 ICM project focuses on maximizing the operations and management of the I-15 corridor with ramp meters, arterial
signals, and the Rapid transit system. The ICM concept enables multiple systems to “talk” to each other to coordinate
operations and maximize efficiency regardless of who owns or operates the individual system; monitors changing conditions
and congestion based on real-time information; generates automated response plans; and re-evaluates and generates new
response plans as traffic conditions change. An ICM concept includes the following key features:

Coordination of all existing networks and systems such as changeable message signs, 511 traveler information,
ramp meters, and arterial signal systems to bypass major incidents or manage daily congestion

Enhance response and control: operating agencies within a corridor or system improve management practices
and coordinate decision-making, resulting in enhanced management and response for minimizing congestion levels

The update to San Diego Forward: The Regional Plan, which would be adopted in 2019, anticipates the completion of the next
ICM Concept of Operations Reports that would identify and expand on the ICM concept for up to three new corridors, in addition
to existing Interstate 15. Concept of operations reports are an important first step in establishing the institutional and
technical partnerships that will be required for successfully working together to achieve a common and unified vision for
managing all modes as a single corridor regardless of jurisdictional/institutional boundaries. SANDAG is currently coordinating
with Caltrans on the development of the next ICM concept by completing the I-805 south corridor Transportation Systems Management
and Operations (TSMO) Plan. Expansion of the next ICM corridor, to be managed by SANDAG, is expected to get underway in FY
2019 using the recently approved ITS/Operations on-call contract.

SANDAG was recently awarded a Caltrans Planning Grant to complete a Regional Transportation System Management and Operations (TSMO)
Plan and key recommendations expected from the plan includes the development/ initiation of the first Concept of Operations.
Work efforts are expected to get underway in early 2019.